Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Eupachycephalosauria

Reptilia

Synonymy list
YearName and author
2020Eupachycephalosauria Dieudonné et al.

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
RankNameAuthor
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Marginocephalia
—Pachycephalosauria()
—Eupachycephalosauria
—Eupachycephalosauria

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Unr. †Eupachycephalosauria Dieudonné et al. 2020
show all | hide all
G. †Homalocephale Maryańska and Osmólska 1974
hide
†Homalocephale calathocercos Maryańska and Osmólska 1974
G. †Pachycephalosaurus Brown and Schlaikjer 1943
hide
+
Invalid names: Dracorex hogwartsia Bakker et al. 2006 [synonym], Pachycephalosaurus grangeri Brown and Schlaikjer 1943 [synonym], Pachycephalosaurus reinheimeri Brown and Schlaikjer 1943 [synonym], Stygimoloch spinifer Galton and Sues 1983 [synonym], Tylosteus ornatus Leidy 1872 [synonym]
Invalid names: Dracorex Bakker et al. 2006 [synonym], Stygimoloch Galton and Sues 1983 [synonym], Tylosteus Leidy 1872 [synonym]
G. †Prenocephale Maryańska and Osmólska 1974
hide
†Prenocephale prenes Maryańska and Osmólska 1974
G. †Stegoceras Lambe 1902
hide
†Stegoceras novomexicanum Jasinski and Sullivan 2011
†Stegoceras validum Lambe 1902
+
Invalid names: Ornatotholus browni Wall and Galton 1979 [synonym]
Invalid names: Hanssuessia Sullivan 2003 [synonym], Ornatotholus Galton and Sues 1983 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Maximum body mass: 1000 kgg
Minimum body mass: 10 kgg
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2004-12-14 12:50:52
Modified: 2004-12-14 14:50:52
Source: g = genus, o = order
References: Marsh 1875, Peczkis 1995

Age range: base of the Late/Upper Campanian to the top of the Lancian or 83.50000 to 66.00000 Ma

Collections (78 total)


Time interval Ma Country or state Original ID and collection number
Campanian83.6 - 72.1Canada (Alberta) Psalisauridae indet. (64647 64657 64662) Stegoceras sp. (64661) Stegoceras validus (64646 64652 64658 64660) Troodon validus (64659 64663 64665)
Late/Upper Campanian83.5 - 70.6USA (New Mexico) Prenocephale sp. (47821) Sphaerotholus goodwini (53514) Stegoceras novomexicanum (144518 144519 144520) Stegoceras validum, Stegoceras novomexicanum (76714)
Late/Upper Campanian83.5 - 70.6Canada (Alberta) Ornatotholus browni (47629 48619) Pachycephalosaurus sp. (59222) Stegoceras validum (230768) Stegoceras validus (48618 60876) Stygimoloch sp. (76752) Troodon validus (53976 59107)
Middle Campanian83.5 - 70.6USA (Montana) Stegoceras sp. (14437)
Middle Campanian - Late/Upper Campanian83.5 - 70.6Canada (Saskatchewan) Stegoceras sp. (14494)
Middle Campanian - Late/Upper Campanian83.5 - 70.6USA (Montana) Ornatotholus browni (50829) Pachycephalosauridae indet. (50830) Stegoceras sp. (48620 50828 50906 50907) Stegoceras validum (14470 14491 50825 50826 50827 61452) Stegoceras validus (14446)
Maastrichtian72.1 - 66.0Mongolia (Omnogov) Homalocephale calathocercos (37019) Ornithischia indet. (180473) Pachycephalosauria indet. (55257 127670) Pachycephalosauridae indet. (127681 180706)
Maastrichtian72.1 - 66.0USA (Montana) Pachycephalosaurus grangeri (47627) Pachycephalosaurus sp. (88987 88988) Predentata indet. (48848) Stenotholus kohleri (12977) Stygimoloch spinifer (47626 48844 48845 48846)
Maastrichtian72.1 - 66.0USA (South Dakota) Dracorex hogwartsia (58813)
Maastrichtian72.1 - 66.0USA (North Dakota) Stygimoloch spinifer (48843)
Lancian70.6 - 66.0USA (Montana) Pachycephalosaurus sp. (14616) Stygimoloch spinifer (14550)
Lancian70.6 - 66.0USA (Wyoming) Pachycephalosaurus sp. (72145) Stygimoloch spinifer (14544)
Late/Upper Maastrichtian70.6 - 66.0USA (South Dakota) Pachycephalosaurus sp., Dracorex hogwartsia (224484) Pachycephalosaurus wyomingensis, Pachycephalosaurus reinheimeri (47628)
Late/Upper Maastrichtian70.6 - 66.0USA (Colorado) Pachycephalosaurus sp. (49539)
Late/Upper Maastrichtian70.6 - 66.0USA (Montana) Pachycephalosaurus sp. (183110) Pachycephalosaurus wyomingensis (52904 152397 161171) Stegoceras sp. (52903 72143) Tylosteus ornatus (91359)
Late/Upper Maastrichtian70.6 - 66.0USA (Wyoming) Pachycephalosaurus grangeri (14585) Pachycephalosaurus sp. (26760) Pachycephalosaurus wyomingensis (64644) Triceratops sp. (64645) Troodon wyomingensis (52106)
Late/Upper Maastrichtian70.6 - 66.0Canada (Alberta) Pachycephalosaurus sp. (168404)